Use the -g option to direct the compiler to generate code to support symbolic debugging. For example:
IA-32 applications:
prompt>ifc -g prog1.f
Itanium(TM)-based applications:
prompt>efc -g prog1.f
The compiler does not support the generation of debugging information in assembly files. If you specify the -g option with -S, the resulting object file will contain debugging information, but the assembly file will not. If you specify the -g option and later assemble the resulting assembly file, the resulting object file will not contain debugging information.